Source: Youtube ((For A Limited Time!)) Buy Calabash (Opo) Seeds Harvested From The Plant Abundance Backyard Food Forest. 10 Seeds For $11.96 (Including Shipping). Click Here To Order: . Sorry to my international friends but currently I’m only able to ship to US mainland postal addresses located within the contingent United States. Thanks for your support. The Calabash Gourd aka Opo is One of our favorite edible vegetables to grow. It has a long history of use not only as a food crop but as a craft crop.